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      <a href="/2017/06/09/angular2-free-7-dynamic-form/" title="玩转Angular2(7)--创建动态表单" itemprop="url">玩转Angular2(7)--创建动态表单</a>
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    <time datetime="2017-06-09T14:10:25.000Z" itemprop="datePublished">2017-06-09</time>
    更新日期:<time datetime="2018-12-18T15:31:30.972Z" itemprop="dateModified">2018-12-18</time>
    
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			<strong class="toc-title">文章目录</strong>
		<ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#响应式表单"><span class="toc-number">1.</span> <span class="toc-text">响应式表单</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#上节回顾"><span class="toc-number">1.1.</span> <span class="toc-text">上节回顾</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#动态表单"><span class="toc-number">2.</span> <span class="toc-text">动态表单</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#HTML模板"><span class="toc-number">2.1.</span> <span class="toc-text">HTML模板</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#接口定义"><span class="toc-number">2.2.</span> <span class="toc-text">接口定义</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#逻辑实现"><span class="toc-number">2.3.</span> <span class="toc-text">逻辑实现</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#注入配置"><span class="toc-number">2.4.</span> <span class="toc-text">注入配置</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#结束语"><span class="toc-number">3.</span> <span class="toc-text">结束语</span></a></li></ol>
		</div>
		
		<p>因为项目原因又玩上了Angular2(v4.0+)，《玩转Angular2》系列用于探索一些灵活或者新的用法。<br>本文结合上一节讲的响应式表单表单，记录创建动态表单的过程。<br><a id="more"></a></p>
<h2 id="响应式表单"><a href="#响应式表单" class="headerlink" title="响应式表单"></a>响应式表单</h2><hr>
<h3 id="上节回顾"><a href="#上节回顾" class="headerlink" title="上节回顾"></a>上节回顾</h3><p>上一节<a href="https://godbasin.github.io/2017/06/04/angular2-free-6-two-form-building/">《玩转Angular2(6)–模型驱动和模板驱动的表单》</a>中有介绍我们创建响应式表单，大家也应该知道响应式表单的灵活性、同步性、测试性都比模板驱动表单要好。</p>
<p>这里先简单回顾一下：</p>
<ol>
<li>在html模板中</li>
</ol>
<ul>
<li><code>form</code>元素需添加<code>formGroup</code>属性，其关联到<code>form</code>元素上的<code>FormGroup</code>实例</li>
<li>每个表单控件只需添加<code>formControlName</code>属性，来绑定<code>FormGroup</code>对应的的控件名</li>
<li>使用<code>ngSubmit</code>可触发表单提交</li>
<li>使用<code>FormGroup</code>实例的<code>valid</code>属性可获取表单的校验状态</li>
</ul>
<ol>
<li>在js中</li>
</ol>
<ul>
<li>需要引入<code>ReactiveFormsModule</code>，来使用模型驱动的一些模板语法</li>
<li><code>FormGroup</code>用于注册多个<code>FormControl</code></li>
<li><code>FormBuilder</code>类能通过处理控件创建的细节问题来帮我们减少重复劳动</li>
<li><code>valueChanges</code>可以订阅表单控件变化</li>
</ul>
<p>然后我们开始将它整理为一个可动态生成的表单吧。</p>
<h2 id="动态表单"><a href="#动态表单" class="headerlink" title="动态表单"></a>动态表单</h2><hr>
<h3 id="HTML模板"><a href="#HTML模板" class="headerlink" title="HTML模板"></a>HTML模板</h3><p>首先，我们需要定义我们要生成怎样的表单。<br>这里暂时只考虑两种：<code>&lt;input&gt;</code>以及<code>&lt;select&gt;</code>。</p>
<p>对于<code>&lt;input&gt;</code>元素，我们只需要一个<code>formControlName</code>属性，剩下的通过响应式处理。<br>对于<code>&lt;select&gt;</code>元素，我们除了<code>formControlName</code>属性，还需提供<code>option</code>选项的内容。</p>
<p>然后通过响应式处理，我们可以统一获取各自的错误提示，后面我们会讲到。目前我们可以获得代码：</p>
<figure class="highlight html"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div></pre></td><td class="code"><pre><div class="line"><span class="tag">&lt;<span class="name">form</span> <span class="attr">class</span>=<span class="string">"form-horizontal"</span> [<span class="attr">formGroup</span>]=<span class="string">"dynamicForm"</span> (<span class="attr">ngSubmit</span>)=<span class="string">"submit()"</span> <span class="attr">style</span>=<span class="string">"border: solid 1px #ccc; padding: 20px 0;"</span>&gt;</span></div><div class="line">    <span class="tag">&lt;<span class="name">div</span> *<span class="attr">ngFor</span>=<span class="string">"let control of customForms"</span> <span class="attr">class</span>=<span class="string">"form-group"</span>&gt;</span></div><div class="line">        <span class="tag">&lt;<span class="name">div</span> <span class="attr">class</span>=<span class="string">"form-group"</span>&gt;</span></div><div class="line">            <span class="tag">&lt;<span class="name">label</span> <span class="attr">class</span>=<span class="string">"col-md-2 control-label"</span>&gt;</span>&#123;&#123;control.label&#125;&#125;<span class="tag">&lt;/<span class="name">label</span>&gt;</span></div><div class="line">            <span class="tag">&lt;<span class="name">div</span> <span class="attr">class</span>=<span class="string">"col-md-6"</span>&gt;</span></div><div class="line">                <span class="tag">&lt;<span class="name">input</span> *<span class="attr">ngIf</span>=<span class="string">"control.type === 'input'"</span> <span class="attr">class</span>=<span class="string">"form-control"</span> [<span class="attr">formControlName</span>]=<span class="string">"control.key"</span> /&gt;</span></div><div class="line">                <span class="tag">&lt;<span class="name">select</span> *<span class="attr">ngIf</span>=<span class="string">"control.type === 'select'"</span> <span class="attr">class</span>=<span class="string">"form-control"</span> [<span class="attr">formControlName</span>]=<span class="string">"control.key"</span>&gt;</span></div><div class="line">                    <span class="tag">&lt;<span class="name">option</span> *<span class="attr">ngFor</span>=<span class="string">"let op of control.options"</span> [<span class="attr">value</span>]=<span class="string">"op.id"</span>&gt;</span>&#123;&#123;op.text&#125;&#125;<span class="tag">&lt;/<span class="name">option</span>&gt;</span></div><div class="line">                <span class="tag">&lt;/<span class="name">select</span>&gt;</span></div><div class="line">            <span class="tag">&lt;/<span class="name">div</span>&gt;</span></div><div class="line">        <span class="tag">&lt;/<span class="name">div</span>&gt;</span></div><div class="line">        <span class="tag">&lt;<span class="name">div</span> *<span class="attr">ngIf</span>=<span class="string">"formErrors[control.key]"</span> <span class="attr">class</span>=<span class="string">"alert alert-danger col-md-6 col-md-offset-2"</span>&gt;</span></div><div class="line">            <span class="tag">&lt;<span class="name">p</span>&gt;</span>&#123;&#123; formErrors[control.key] &#125;&#125;<span class="tag">&lt;/<span class="name">p</span>&gt;</span></div><div class="line">        <span class="tag">&lt;/<span class="name">div</span>&gt;</span></div><div class="line">    <span class="tag">&lt;/<span class="name">div</span>&gt;</span></div><div class="line">    <span class="tag">&lt;<span class="name">div</span> <span class="attr">class</span>=<span class="string">"col-md-offset-2"</span>&gt;</span></div><div class="line">        &#123;&#123;dynamicForm.value | json&#125;&#125;</div><div class="line">    <span class="tag">&lt;/<span class="name">div</span>&gt;</span></div><div class="line">    <span class="tag">&lt;<span class="name">div</span> <span class="attr">class</span>=<span class="string">"form-group"</span>&gt;</span></div><div class="line">        <span class="tag">&lt;<span class="name">div</span> <span class="attr">class</span>=<span class="string">"col-sm-offset-2 col-sm-10"</span>&gt;</span></div><div class="line">            <span class="tag">&lt;<span class="name">button</span> [<span class="attr">disabled</span>]=<span class="string">"!dynamicForm.valid"</span> <span class="attr">type</span>=<span class="string">"submit"</span> <span class="attr">class</span>=<span class="string">"btn btn-info"</span>&gt;</span>提交<span class="tag">&lt;/<span class="name">button</span>&gt;</span></div><div class="line">        <span class="tag">&lt;/<span class="name">div</span>&gt;</span></div><div class="line">    <span class="tag">&lt;/<span class="name">div</span>&gt;</span></div><div class="line"><span class="tag">&lt;/<span class="name">form</span>&gt;</span></div></pre></td></tr></table></figure>
<p>可见，我们通过<code>customForms</code>来设定所有的表单控件，其中每个控件：</p>
<ul>
<li><code>type</code>为控件类型，字符串表示</li>
<li><code>key</code>为唯一标识，字符串表示</li>
<li><code>options</code>为选项，为<code>{id:id, text: text}</code>组成的数组</li>
</ul>
<h3 id="接口定义"><a href="#接口定义" class="headerlink" title="接口定义"></a>接口定义</h3><p>在我们的响应式表单中，有个很重要的校验，这里我们使用<code>validations</code>来保存每个控件的校验：</p>
<ul>
<li><code>type</code>为校验类型，包括’required’/‘maxLength’/‘minLength’/‘email’/‘pattern’等，具体参考<code>Validators</code></li>
<li><code>param</code>为参数，像’maxLength’可带Number的参数，’pattern’可带正则字符串，同样参考<code>Validators</code></li>
<li><code>message</code>为错误提示</li>
</ul>
<p>到这里我们的控件主要包括以下内容：</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div></pre></td><td class="code"><pre><div class="line"><span class="comment">// validation接口</span></div><div class="line">interface IValidations &#123;</div><div class="line">    <span class="attr">type</span>: string;</div><div class="line">    param?: any;</div><div class="line">    message: string;</div><div class="line">&#125;</div><div class="line"></div><div class="line"><span class="comment">// option接口</span></div><div class="line">interface IOptions &#123;</div><div class="line">    <span class="attr">id</span>: string;</div><div class="line">    text: string;</div><div class="line">&#125;</div><div class="line"></div><div class="line"><span class="comment">// 控件接口</span></div><div class="line">interface ICustomControl &#123;</div><div class="line">    <span class="attr">type</span>: string;</div><div class="line">    label: string;</div><div class="line">    key: string;</div><div class="line">    validations?: IValidations[];</div><div class="line">    options?: IOptions[];</div><div class="line">&#125;</div></pre></td></tr></table></figure>
<h3 id="逻辑实现"><a href="#逻辑实现" class="headerlink" title="逻辑实现"></a>逻辑实现</h3><p>到了这里，我们的基本数据结构定义完毕了，我们则可以通过这个数据结构生成需要的数据，包括：</p>
<ul>
<li><code>FormGroup</code>: 包括每个<code>FormControl</code>控件的细节控制</li>
<li><code>model</code>: 表单的控件model集合</li>
<li><code>formErrors</code>: 表单控件校验总错误信息集合</li>
<li><code>validationMessages</code>: 表单控件单个错误信息集合</li>
</ul>
<p>结合上一节内容，调整后我们的代码：</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div><div class="line">46</div><div class="line">47</div><div class="line">48</div><div class="line">49</div><div class="line">50</div><div class="line">51</div><div class="line">52</div><div class="line">53</div><div class="line">54</div><div class="line">55</div><div class="line">56</div><div class="line">57</div><div class="line">58</div><div class="line">59</div><div class="line">60</div><div class="line">61</div><div class="line">62</div><div class="line">63</div><div class="line">64</div><div class="line">65</div><div class="line">66</div><div class="line">67</div><div class="line">68</div><div class="line">69</div><div class="line">70</div><div class="line">71</div><div class="line">72</div><div class="line">73</div></pre></td><td class="code"><pre><div class="line">@Component(&#123;</div><div class="line">    <span class="attr">selector</span>: <span class="string">'dynamic-form'</span>,</div><div class="line">    <span class="attr">templateUrl</span>: <span class="string">'./dynamic-form.component.html'</span>,</div><div class="line">&#125;)</div><div class="line"><span class="keyword">export</span> <span class="class"><span class="keyword">class</span> <span class="title">CustomFormComponent</span> </span>&#123;</div><div class="line">    @Input() config: any; <span class="comment">// 保存配置内容</span></div><div class="line">    customGroup: any = &#123;&#125;; <span class="comment">// 用于创建FormGroup</span></div><div class="line">    model: any = &#123;&#125;; <span class="comment">// 保存每个控件值的model，主要用于提交等</span></div><div class="line">    dynamicForm: FormGroup; <span class="comment">// FormGroup</span></div><div class="line"></div><div class="line">    formErrors = &#123;&#125;;</div><div class="line">    validationMessages = &#123;&#125;;</div><div class="line"></div><div class="line">    <span class="keyword">constructor</span>(private fb: FormBuilder) &#123; &#125;</div><div class="line"></div><div class="line">    ngOnInit() &#123;</div><div class="line">        <span class="comment">// 遍历配置中的控件</span></div><div class="line">        <span class="keyword">this</span>.config.forEach(<span class="function">(<span class="params">control: ICustomControl, i</span>) =&gt;</span> &#123;</div><div class="line">            <span class="comment">// 初始化控件错误信息</span></div><div class="line">            <span class="keyword">this</span>.formErrors[control.key] = <span class="string">''</span>;</div><div class="line">            <span class="keyword">this</span>.validationMessages[control.key] = &#123;&#125;;</div><div class="line">            <span class="comment">// 初始化model，若有初始值可在这里处理</span></div><div class="line">            <span class="keyword">this</span>.model[control.key] = <span class="literal">undefined</span>;</div><div class="line">            <span class="comment">// 校验器设置</span></div><div class="line">            <span class="keyword">const</span> validations = [];</div><div class="line">            control.validations.forEach(<span class="function">(<span class="params">valid: IValidations</span>) =&gt;</span> &#123;</div><div class="line">                <span class="keyword">this</span>.validationMessages[control.key][valid.type.toLowerCase()] = valid.message;</div><div class="line">                <span class="keyword">if</span> (valid.param) &#123;</div><div class="line">                    <span class="comment">// 若有参数，则作为函数调用参数</span></div><div class="line">                    validations.push(Validators[valid.type](valid.param));</div><div class="line">                &#125; <span class="keyword">else</span> &#123;</div><div class="line">                    validations.push(Validators[valid.type]);</div><div class="line">                &#125;</div><div class="line">            &#125;);</div><div class="line">            <span class="keyword">this</span>.customGroup[control.key] = [<span class="keyword">this</span>.model[control.key], validations];</div><div class="line">        &#125;);</div><div class="line">        <span class="keyword">this</span>.createForm();</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    createForm() &#123;</div><div class="line">        <span class="comment">// 有多个FormControl，把它们注册进一个父FormGroup中</span></div><div class="line">        <span class="keyword">this</span>.dynamicForm = <span class="keyword">this</span>.fb.group(<span class="keyword">this</span>.customGroup);</div><div class="line">        <span class="comment">// 监听变化，更新校验信息</span></div><div class="line">        <span class="keyword">this</span>.dynamicForm.valueChanges</div><div class="line">            .subscribe(<span class="function"><span class="params">data</span> =&gt;</span> <span class="keyword">this</span>.onValueChanged(data));</div><div class="line">        <span class="keyword">this</span>.onValueChanged(); <span class="comment">// 更新校验信息</span></div><div class="line">    &#125;</div><div class="line"></div><div class="line">    onValueChanged(data?: any) &#123;</div><div class="line">        <span class="keyword">if</span> (!<span class="keyword">this</span>.dynamicForm) &#123;</div><div class="line">            <span class="keyword">return</span>;</div><div class="line">        &#125;</div><div class="line">        <span class="keyword">const</span> form = <span class="keyword">this</span>.dynamicForm;</div><div class="line">        <span class="keyword">for</span> (<span class="keyword">const</span> field <span class="keyword">in</span> <span class="keyword">this</span>.formErrors) &#123;</div><div class="line">            <span class="comment">// 清除控件错误信息</span></div><div class="line">            <span class="keyword">this</span>.formErrors[field] = <span class="string">''</span>;</div><div class="line">            <span class="keyword">const</span> control = form.get(field);</div><div class="line">            <span class="keyword">if</span> (control &amp;&amp; control.dirty &amp;&amp; !control.valid) &#123;</div><div class="line">                <span class="keyword">const</span> messages = <span class="keyword">this</span>.validationMessages[field];</div><div class="line">                <span class="keyword">for</span> (<span class="keyword">const</span> key <span class="keyword">in</span> control.errors) &#123;</div><div class="line">                    <span class="keyword">this</span>.formErrors[field] += messages[key] + <span class="string">' '</span>;</div><div class="line">                &#125;</div><div class="line">            &#125;</div><div class="line">        &#125;</div><div class="line">    &#125;</div><div class="line"></div><div class="line">    submit() &#123;</div><div class="line">        <span class="comment">// 赋值model，可用于修改提交</span></div><div class="line">        <span class="keyword">this</span>.model = &#123;...this.dynamicForm.value&#125;;</div><div class="line">        <span class="built_in">console</span>.log(<span class="keyword">this</span>.model);</div><div class="line">        alert(<span class="string">'成功！'</span>);</div><div class="line">    &#125;</div><div class="line">&#125;</div></pre></td></tr></table></figure>
<h3 id="注入配置"><a href="#注入配置" class="headerlink" title="注入配置"></a>注入配置</h3><p>我们可以模拟一个配置文件，注入到这个动态表单控件中：</p>
<figure class="highlight js"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div><div class="line">41</div><div class="line">42</div><div class="line">43</div><div class="line">44</div><div class="line">45</div></pre></td><td class="code"><pre><div class="line"><span class="keyword">export</span> <span class="keyword">const</span> customForms: ICustomControl[] = [</div><div class="line">    &#123;</div><div class="line">        <span class="attr">type</span>: <span class="string">'input'</span>,</div><div class="line">        <span class="attr">label</span>: <span class="string">'名字'</span>,</div><div class="line">        <span class="attr">key</span>: <span class="string">'name'</span>,</div><div class="line">        <span class="attr">validations</span>: [&#123;</div><div class="line">            <span class="attr">type</span>: <span class="string">'required'</span>,</div><div class="line">            <span class="attr">message</span>: <span class="string">'名字必填'</span></div><div class="line">        &#125;, &#123;</div><div class="line">            <span class="attr">type</span>: <span class="string">'maxLength'</span>,</div><div class="line">            <span class="attr">param</span>: <span class="number">8</span>,</div><div class="line">            <span class="attr">message</span>: <span class="string">'名字最多8个字符'</span></div><div class="line">        &#125;, &#123;</div><div class="line">            <span class="attr">type</span>: <span class="string">'minLength'</span>,</div><div class="line">            <span class="attr">param</span>: <span class="number">3</span>,</div><div class="line">            <span class="attr">message</span>: <span class="string">'名字最少3个字符'</span></div><div class="line">        &#125;]</div><div class="line">    &#125;, &#123;</div><div class="line">        <span class="attr">type</span>: <span class="string">'input'</span>,</div><div class="line">        <span class="attr">label</span>: <span class="string">'Email'</span>,</div><div class="line">        <span class="attr">key</span>: <span class="string">'email'</span>,</div><div class="line">        <span class="attr">validations</span>: [&#123;</div><div class="line">            <span class="attr">type</span>: <span class="string">'required'</span>,</div><div class="line">            <span class="attr">message</span>: <span class="string">'Email必填'</span></div><div class="line">        &#125;, &#123;</div><div class="line">            <span class="attr">type</span>: <span class="string">'email'</span>,</div><div class="line">            <span class="attr">message</span>: <span class="string">'Email格式不正确'</span></div><div class="line">        &#125;]</div><div class="line">    &#125;, &#123;</div><div class="line">        <span class="attr">type</span>: <span class="string">'select'</span>,</div><div class="line">        <span class="attr">label</span>: <span class="string">'职业'</span>,</div><div class="line">        <span class="attr">key</span>: <span class="string">'job'</span>,</div><div class="line">        <span class="attr">validations</span>: [&#123;</div><div class="line">            <span class="attr">type</span>: <span class="string">'required'</span>,</div><div class="line">            <span class="attr">message</span>: <span class="string">'职业必选'</span></div><div class="line">        &#125;],</div><div class="line">        <span class="attr">options</span>: [</div><div class="line">            &#123;<span class="attr">id</span>: <span class="string">''</span>, <span class="attr">text</span>: <span class="string">''</span>&#125;,</div><div class="line">            &#123;<span class="attr">id</span>: <span class="string">'1'</span>, <span class="attr">text</span>: <span class="string">'医生'</span>&#125;,</div><div class="line">            &#123;<span class="attr">id</span>: <span class="string">'2'</span>, <span class="attr">text</span>: <span class="string">'程序员'</span>&#125;,</div><div class="line">            &#123;<span class="attr">id</span>: <span class="string">'3'</span>, <span class="attr">text</span>: <span class="string">'公务员'</span>&#125;,</div><div class="line">            &#123;<span class="attr">id</span>: <span class="string">'4'</span>, <span class="attr">text</span>: <span class="string">'其他'</span>&#125;</div><div class="line">        ]</div><div class="line">    &#125;</div><div class="line">];</div></pre></td></tr></table></figure>
<p>可以看到最终效果图：</p>
<p><img src="https://github-imglib-1255459943.cos.ap-chengdu.myqcloud.com/1495985927%281%29.png" alt="image"></p>
<h2 id="结束语"><a href="#结束语" class="headerlink" title="结束语"></a>结束语</h2><hr>
<p>本节我们将之前的响应式表单进行改造，做成了动态表单，通过配置去生成我们需要的表单，包括校验等等。<br>这里只是个基本雏形，后面若需要完善，例如表单的初始化状态加载，或是其他类型表单的拓展，也是需要花些心思的呢。<br><a href="https://github.com/godbasin/godbasin.github.io/tree/blog-codes/angular2-free/7-dynamic-form" target="_blank" rel="external">此处查看项目代码</a><br><a href="http://angular2-free.godbasin.com/7-dynamic-form/index.html#/home/page-setting" target="_blank" rel="external">此处查看页面效果</a></p>
  
		
		<p style="margin-top:50px;">
			查看Github有更多内容噢：<a href="https://github.com/godbasin">https://github.com/godbasin</a>
			<br>
			更欢迎来<a href="https://godbasin.github.io/front-end-playground">被删的前端游乐场</a>边撸猫边学前端噢
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	<img src="https://github-imglib-1255459943.cos.ap-chengdu.myqcloud.com/2code2.jpg" width="200" height="200" style="display:block;margin: 0 auto;" />
	<p style="text-align: center;margin-top: 10px;margin-bottom: 20px;">码生艰难，写文不易，给我家猪囤点猫粮了喵~</p>
	<div class="author-right">
  		<p>作者：被删</p>
  		<p>出处：<a href="https://godbasin.github.io">https://godbasin.github.io</a></p>
  		<p>本文版权归作者所有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。</p>
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  <strong class="toc-title">文章目录</strong>
  <ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#响应式表单"><span class="toc-number">1.</span> <span class="toc-text">响应式表单</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#上节回顾"><span class="toc-number">1.1.</span> <span class="toc-text">上节回顾</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#动态表单"><span class="toc-number">2.</span> <span class="toc-text">动态表单</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#HTML模板"><span class="toc-number">2.1.</span> <span class="toc-text">HTML模板</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#接口定义"><span class="toc-number">2.2.</span> <span class="toc-text">接口定义</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#逻辑实现"><span class="toc-number">2.3.</span> <span class="toc-text">逻辑实现</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#注入配置"><span class="toc-number">2.4.</span> <span class="toc-text">注入配置</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#结束语"><span class="toc-number">3.</span> <span class="toc-text">结束语</span></a></li></ol>
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